ES439298A1 - Perfeccionamientos introducidos en las conexiones de insta- laciones de interfono, de intercomunicacion en duplex o de instalaciones de altavoces mandadas por pulsadores. - Google Patents

Perfeccionamientos introducidos en las conexiones de insta- laciones de interfono, de intercomunicacion en duplex o de instalaciones de altavoces mandadas por pulsadores.

Info

Publication number
ES439298A1
ES439298A1 ES439298A ES439298A ES439298A1 ES 439298 A1 ES439298 A1 ES 439298A1 ES 439298 A ES439298 A ES 439298A ES 439298 A ES439298 A ES 439298A ES 439298 A1 ES439298 A1 ES 439298A1
Authority
ES
Spain
Prior art keywords
installations
intercommunication
duplex
translation
connections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES439298A
Other languages
English (en)
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEUMANN ELEKTRONIK GmbH
Original Assignee
NEUMANN ELEKTRONIK GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEUMANN ELEKTRONIK GmbH filed Critical NEUMANN ELEKTRONIK GmbH
Publication of ES439298A1 publication Critical patent/ES439298A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Interface Circuits In Exchanges (AREA)
ES439298A 1974-07-17 1975-07-10 Perfeccionamientos introducidos en las conexiones de insta- laciones de interfono, de intercomunicacion en duplex o de instalaciones de altavoces mandadas por pulsadores. Expired ES439298A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2434321A DE2434321C3 (de) 1974-07-17 1974-07-17 Schaltungsanordnung für tastengesteuerte Wechselsprech-, Gegensprech- oder Lautsprecheranlagen

Publications (1)

Publication Number Publication Date
ES439298A1 true ES439298A1 (es) 1977-03-01

Family

ID=5920787

Family Applications (1)

Application Number Title Priority Date Filing Date
ES439298A Expired ES439298A1 (es) 1974-07-17 1975-07-10 Perfeccionamientos introducidos en las conexiones de insta- laciones de interfono, de intercomunicacion en duplex o de instalaciones de altavoces mandadas por pulsadores.

Country Status (9)

Country Link
AT (1) AT341590B (tr)
BE (1) BE831415A (tr)
CH (1) CH596721A5 (tr)
DE (1) DE2434321C3 (tr)
ES (1) ES439298A1 (tr)
FI (1) FI61111C (tr)
FR (1) FR2289079A1 (tr)
NO (1) NO141583C (tr)
SE (1) SE7508032L (tr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837950C2 (de) * 1978-08-31 1986-11-13 Neumann Elektronik GmbH, 4330 Mülheim Vermittlungseinrichtung für eine tastengesteuerte Wechsel-, Gegen- oder Lautsprechanlage
DE3418484C1 (de) * 1984-05-18 1985-08-29 Neumann Elektronik GmbH, 4330 Mülheim Rücksprecheinrichtung für eine Teilnehmerstelle einer tastengesteuerten Wechselsprechanlage mit Linienwahl
DE4334906C2 (de) * 1993-10-13 1997-05-07 Neumann Elektronik Gmbh Einrichtung zur Übertragung von Ruf- und Belegungszustandssignalen von Wechsel- oder Gegen-Lautsprechanlagen mit Linienwahl über eine Zweidraht-Fernleitung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1512811C3 (de) * 1967-04-27 1984-08-02 ANT Nachrichtentechnik GmbH, 7150 Backnang Schaltungsanordnung für die Prüfung der sprechstelleneigenen Einrichtungen in Sprechanlagen

Also Published As

Publication number Publication date
FR2289079B1 (tr) 1982-03-26
AT341590B (de) 1978-02-10
DE2434321C3 (de) 1983-12-08
DE2434321A1 (de) 1976-01-22
FI751974A (tr) 1976-01-18
NO752541L (tr) 1976-01-20
DE2434321B2 (de) 1977-01-20
SE7508032L (sv) 1976-01-19
FI61111B (fi) 1982-01-29
NO141583C (no) 1980-04-09
BE831415A (fr) 1975-11-17
NO141583B (no) 1979-12-27
CH596721A5 (tr) 1978-03-15
FR2289079A1 (fr) 1976-05-21
FI61111C (fi) 1982-05-10
ATA482375A (de) 1977-06-15

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971001